Slipped capital femoral epiphysis is a well-known disorder of the hip in adolescents. In general, the direction of slip of the capital femoral epiphysis on the femoral neck is posterior and inferior, although superior slips have been reported1,2. We report a case of slipped capital femoral epiphysis in which the epiphysis was displaced anteriorly in relation to the neck. The patient and her family were informed that data concerning the case would be submitted for publication.
An eleven-year-old girl presented with a two-month history of pain in the right knee. There was no history of trauma to the right hip or knee. Physical examination revealed a well-developed, well-nourished girl. She was 143 cm tall and weighed 39 kg. The body mass index was 19.1. The physical examination was normal, except with regard to the right lower extremity. She walked with a right antalgic gait. The right leg was 2.0 cm shorter than the left. Hip motion was not painful, and there was neither tenderness nor swelling about the right hip. Range of motion of the right hip included 15° of external rotation, 80° of internal rotation, 115° of flexion, and a 30° flexion contracture. As the right hip was flexed, adduction and internal rotation occurred spontaneously. Radiographs and computed tomography revealed an anterior-inferior slip of the capital femoral …
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